My friend, excellent Slovak sharpener Pavol Sandor, published on you tube a series of contributions "Knife blade profile measurement" Part 1 to 4. It is commented in Slovak language only, but it is well understandable also without the comments. https://www.youtube.com/watch?v=l8hrhp4UZHY
He prepares a wax imprint of the blade, makes a digital photo and measures the angles on the screen.
His method works well, but requires a little bit of skill and time. When Pavol needed to measure the bevel angles* of a DE razor blade, he asked me to do it with a laser goniometer.
*P.S.: The results obtained for ASTRA Superior DE blade were: first bevel angle = 7°, second bevel angle = 8.5° and the included angle = 15.5°. BESS sharpness was 50 gf.
He prepares a wax imprint of the blade, makes a digital photo and measures the angles on the screen.
His method works well, but requires a little bit of skill and time. When Pavol needed to measure the bevel angles* of a DE razor blade, he asked me to do it with a laser goniometer.
*P.S.: The results obtained for ASTRA Superior DE blade were: first bevel angle = 7°, second bevel angle = 8.5° and the included angle = 15.5°. BESS sharpness was 50 gf.